Thielmann & Son Heating and Cooling

  • Contractors - HVAC
17020 W. National Avenue
New Berlin, WI 53151
Office Hours Monday - Friday 7:30 am until 4:30 pm. Service is available 24 hours a day 7 days a wk
  • About

    We are a full service HVAC company specializing in service and installation of residential and commercial heating and cooling equipment. We have proudly served all of Southeast Wisconsin since 1929.

  • Directions

    We are located on the north side of National Avenue 1 block east of Calhoun Road.